According to the PMBOK® Guide, specifically within the Sequence Activities process of Project Schedule Management, the Precedence Diagramming Method (PDM) is a technique used for constructing a schedule model in which activities are represented by nodes and are graphically linked by one or more logical relationships to show the sequence in which the activities are to be performed.

Finish-to-Start (FS): This is the most commonly used type of precedence relationship. In this relationship, a successor activity cannot start until a predecessor activity has finished.

Example: The " Install Hardware " (Successor) activity cannot start until the " Build Foundation " (Predecessor) activity is finished.

Logical Significance: FS relationships are the default in most project management software because they represent the most intuitive and frequent flow of work in both traditional and agile projects.

Comparison with other options:

A. Start-to-start (SS): A successor activity cannot start until a predecessor activity has started. This is often used for overlapping activities but is less common than FS.

B. Start-to-finish (SF): A successor activity cannot finish until a predecessor activity has started. This is the least commonly used relationship and is rarely seen in standard project schedules.

D. Finish-to-finish (FF): A successor activity cannot finish until a predecessor activity has finished. This is used when activities must conclude at the same time (e.g., " Documentation " cannot finish until " Coding " finishes).